Leroy Allen in 1700s.

There had to be a Leroy ALLEN, maybe in IN, PA, or OH, in the 1700's!I think his unknown daughter m. Hollister DEWITT, b. ca 1805, and the given names of Leroy Allen, Allen, L.A., Lenora Allen and Leroy got passed down through generations of DEWITTS.Help! I need him if I'm ever going to identify my gggma